The low phenotypic frequencies of HLA-A*02:07, A*26:01, and A*30:04 in BD patients, which ranged between 5 and 15% in the present study, might have rendered it difficult to find associations between these HLA-A alleles and clinical manifestations in the previous studies that adopted a relatively small number of subjects. The gene discussed is HLA-A; the disease is Behcet disease.